import requests

url = "http://ihrm-test.itheima.net/api/sys/user/1498147610031153152"

tou = {
    "Authorization":"355879bf-50eb-4323-8696-32d8e315a24a"
}

ti = {
    "username":"孙军乐"
}

response = requests.put(url=url,headers=tou,json=ti)

print(response.json())